Merge pull request #950 from kelseyhightower/awk

remove unnecessary use of grep

docs/user-guide/namespaces.md

@@ -67,7 +67,7 @@ context.
 First get your current context:
 
 ```shell
-$ export CONTEXT=$(kubectl config view | grep current-context | awk '{print $2}')
+$ export CONTEXT=$(kubectl config view | awk '/current-context/ {print $2}')
 ```
 
 Then update the default namespace: